How to say this in English? When a telecommunication company as such China Mobile make a promotion plan, they would sell some plans which will benefits for people. For example, they said if you give the $100 expense account in advance, you will be promised to return $40 per month for three months in the future. How can I say this kind of plan in English? If you can read chinese, the word in chinese is "话费返值套餐"。